On this day October 13, 1958

Billboard discontinued the “C&W Best Sellers in Stores” and “Most Played C&W by Jockeys” charts. Starting with the October 20 issue, there is one all-encompassing “Hot C&W Sides” chart. The new chart has 30 positions, and “City Lights” by Ray Price was the first #1 song.
Source: This Day in Country